Cock and valve.



No. 67|,984. Patented Apr. ls, leol. J. HERNAN.

GOCK AND VALVE. (No Modem (Appliemn med Aug. 2o, 1900.)

A t707372/Zier/zam.

THE mams mens PHoYaLIYHn., wumamn. n. c.

UNITED STATES PATENT Fries.

JOHN TIERNAN, OF TOLEDO, OHIO, ASSIGNOR OF TWO-THIRDS TO M. C. TIERNAN AND A. H. SMITH, OF SAME PLACE.

COCK AND VALVE.

SPECIFICATION formingpart of Letters Patent No. 671,984, dated April 16, 1901.

Application iiled August 20, 1900.y Serial No. 27,489. (No model.)

To a/ZZ whom it may concern:

Be it known that I, JOHN TIERNAN, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio,have invented certain new and useful Improvements in Cooks and Valves, of which the following is a specification.

My invention relates to cocks and valves, and especially to that type known as an angle-cock, whichis employed in connection with the Westinghouse air-brake and to which are secured the ends of the train-pipe and flexible coupling-hose, one o f said anglecocks being located near each end of a car, so as to be easily accessible for trainmen. It sometimes happens either by accident or through the instrumentality of some malicio usly-disposed person that the handle of the angle-cock becomes turned and the communication between the parts of the brake sys'- tem thus destroyed, so that the part in the rear of the angle-cock is rendered inoperative. When such Ya condition of the brake system exists, the engineer obviously cannot control the train, and great danger is constantly imminent.

The object of the invention is the provision of means for locking the valve in its open position and, if desired, in its closed position, so that it is impossible for the angle-cock to be turned except by an authorized person.

My invention consists, objectively, in a valve or angle-cock-having the top of the plug provided with two parallel holes,within which are located sliding locking-bolts adapted to be operated by a key, the Abody of the valve or cock being provided' with seats or recesses to receive the ends of the bolts, so as to lock the plug against turning.

It further consists in certain novelties of construction and arrangements and combinations ot' p'arts hereinafter set forth,and specifled in the claims.

The accompanying drawings illustrate one example of the physical embodiment of my invention constructed according to the best mode vI have so far devised for the practical application of the principle.

Figure 1 is a side elevation View of an an- 5o gle-cock embodying my improvements. Fig.

2 is a top plan View of Fig. 1 with a part of the top broken away to show one of the locking-bolts and seats. Fig. 3 is a sectional View taken on line 3 3 of Fig. Fig. 4 is a perspective view of a locking-bolt. Fig. `5 shows a part of an operating or unlocking key.

Referring to the several figures, the numeral 1 designates the body of the anglecock.

2 2 are lugs or stops cast integral with the body portion.

8 is a rotary plug having a passage through it; 4, a washer; 5, a nut.

6 6 are the straight edges of the top boundary line of the plug, made by cutting awaya part of the metal in any way.

is a handle which has a flange adapted to fit over the top of the body of the angle-cock; 8, a stop or lug on the handle adapt-ed to engage the lugs 2 2 and limit its arc of rotation to about ninety degrees.

9 9 are the straight edges of the hole through the handle, which match 'the straight edges 6 6 of the top of the plug; 10, a screw fitting a threaded vhole made partly in the body of the cock and partly in the handle; 11, a similar screw; 12, a dust-guard held in position i by screw 11 and adapted to turn about the screw asa pivot.

13 13 are recesses or seats made in the body of the cock and on opposite sides thereof.

14 14 are parallel holes made near the top end of the plug perpendicular to its length and extending nearly through the same.

15 is a keyhole made in the top end of the plug and intersecting the wall which sepa rates the two holes 14 14 for the bolts.

16 16 are two sliding bolts fitting the holes in the plug and adapted to be held against rotary movement.

17 17 are the stems of the bolts.

18 18 are coiled springs engaging the stems and adapted to bear against the bottom surfaces of the holes 14 14, as clearly shown in Fig. 2 of the drawings.

19 19 are recesses made in the top surfaces of the bolts midway of their ends.

20 20 are oblique walls of the recesses adapted to be frictionally engaged by the arms of a key.

21 is a key, and 22 22 are the arms of the key.

IOO

The method of assembling the constituent elements and parts of the valve or angle-cock and the lock is obvious and need not be set forth.

Vhen the handle of the cock is in the position shown in Figs. 1 and 2, the bolts 16 16 engage the recesses or seats 13 13 and are held against movement- 01 Withdrawal by the springs 13 1S. To make possible the rotation ofthe handle and plug, the key is inserted and turned, the arms 22 22 engaging the oblique Walls of the bolts and retraeting them and compressing the springs. When the handle and plug are turned from a closed to an open position, the bolts automatically lock under the action of the springs.

From the foregoing it is clear that I have provided means for securely locking the plug of a valve or angle-cock which fulfils all the conditions set forth as the purpose and end of my invention.

Vhile I have illustrated and described only one example of the physical embodiment of my invention, I do not thereby intend to restrict the scope of the same to such specific example, inasmuch as in practice numerous changes may be made Without constituting a substantialdeparturetherefrom. There may be added other recesses 13, so that the plug may be locked in a closed position or in a partly-closed position, the shape of the bolts, key, and keyhole altered, one bolt only employed instead of two, the location of the several parts differently disposed, and numerous other changes introduced of a colorable nature. All such alterations I intend to embrace Within the scope of my claims.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination in avalve orangle-cock of a body portion provided with a recess or seat for the end of a reciprocating bolt; a rotary plug having a hole in .the body of the same; a bolt and spring located within the hole in the plug; and a keyhole in the plug communicating with the bolt-hole and bolt.

2. The combination iu avalve or angle-cock of a body portion provided with recesses or seats for the ends of reciprocating bolts; a ro.- tary plug having two holes in the body of the same; bolts and springs located within the holes in the plug; and a keyhole in the plug.

communicating with the bolt-holes and bolts.

3. The combination in a valve orangle-eock, of a body portion provided with a recess or seat for the end of a bolt; a rotary plug; a

reciprocating bolt located Within a hole in the'.

plug; a spring; and a keyhole in the plug for the insertion of a key to retract the bolt from its locked position.

1. The combination in a valve or angle-cock, of a body portion having seats for the ends of bolts located at opposite sides of the central opening or passage therethrough; a rotary plug provided with two reciprocating springbolts adapted to move simultaneously in op posite directions relative to the seats in the body portion; and a keyhole in the ltop of the plug and communicating with the parallel holes Within which the sliding bolts are 1ocated for the insertion of a key to move the bolts.

5. The combination in a valve orangle-cock, of a body portion having a seat for the end of a reciprocating bolt; a plug having a passage therethrough; a locking-bolt in connection with the plug; a keyhole in the Valve for the insertion of an operating-key; and a dustguard for the keyhole.

In testimony whereof I aliix my signature in presence of two witnesses.

JOHN TIERNAN.

Vitnesses:

AMos S. TROUT, ANNA H. TROUT. 

